Between September 1992-February 1994, a total of 55 patients (28 male, 27 female), with symptoms of enuresis diurna (ED) and/or enuresis nocturna (EN), urge continence and recurrent urinary retention were investigated with urodynamics and uroradiography. In 13 (52%) of the 25 patients with EN unstable detrusor contractions were detected. Among 28 patients with ED, 24 (85.7%) demonstrated urodynamic abnormalities such as, unstable detrusor contractions (20 patients), detrusor-sphincter dyssinergia (DSD, 1 patient), unrelaxing external sphincter complex (UESC, 2 patients) or hypocompliant bladder (1 patient). In two patients under the age of one with urinary retention one was found to have DSD and the other a hypocompliant bladder. The upper urinary investigations revealed that 11 patients had upper urinary tract involvement from VUR (9 patients) or incomplete ureteral obstruction (2 patients). Two of these patients were already in chronic renal failure at the time of investigation. In all patients with upper urinary tract involvement day-time wetting was a common finding; bed wetting and occasional urinary retention were also seen in those patients. Our findings suggest that with voiding problems are likely to exhibit pathological urodynamic patterns especially if they present with day-time wetting and carry the risk of urinary tract involvement.